Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy | |
Chi, Weiqian2,3; Li, Gen2; Wang, Wenjing3; Sun, Chengqi1,2 | |
刊名 | INTERNATIONAL JOURNAL OF FATIGUE |
2022-07-01 | |
卷号 | 160页码:9 |
关键词 | Additively manufactured titanium alloy Very high cycle fatigue Interior crack initiation Ultralow crack growth rate Grain refinement |
ISSN号 | 0142-1123 |
DOI | 10.1016/j.ijfatigue.2022.106862 |
通讯作者 | Wang, Wenjing(wjwang@bjtu.edu.cn) ; Sun, Chengqi(scq@lnm.imech.ac.cn) |
英文摘要 | Very high cycle fatigue of an additively manufactured Ti-6Al-4V is studied at R =-1, 0.1 and 0.2. The fracture surface of crack initiation and early growth region presents fine granular area (FGA) morphology with discon-tinuous regions of nanograins. The equivalent crack growth rate in FGA is in the magnitude of 10(-13)-10(-11) m/cyc based on the "tree ring" patterns marked on fracture surface. Interior crack initiation and early growth is attributed to the cracks caused by nanograins formed during fatigue loading and the cracks formed irrespective of nanograins. The crack growth rate in FGA is also used to predict the fatigue life. |
资助项目 | National Natural Science Foundation of China Basic Science Center for Multiscale Problems in Nonlinear Mechanics[11988102] ; Science and Technology Research and Development Program of China State Railway Group Co., Ltd.[P2020J024] ; National Natural Science Foundation of China[91860112] |
WOS关键词 | HIGH-STRENGTH STEELS ; E D FUSION ; LIFE ; BEHAVIOR ; MECHANISM ; TI-6AL-4V ; MICROSTRUCTURE ; PROPAGATION ; PERFORMANCE ; THRESHOLD |
WOS研究方向 | Engineering ; Materials Science |
语种 | 英语 |
WOS记录号 | WOS:000793136300001 |
资助机构 | National Natural Science Foundation of China Basic Science Center for Multiscale Problems in Nonlinear Mechanics ; Science and Technology Research and Development Program of China State Railway Group Co., Ltd. ; National Natural Science Foundation of China |
内容类型 | 期刊论文 |
源URL | [http://dspace.imech.ac.cn/handle/311007/89447] |
专题 | 力学研究所_非线性力学国家重点实验室 |
通讯作者 | Wang, Wenjing; Sun, Chengqi |
作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 3.Beijing Jiaotong Univ, Key Lab Vehicle Adv Mfg Measuring & Control Techn, Minist Educ, Beijing 100044, Peoples R China |
推荐引用方式 GB/T 7714 | Chi, Weiqian,Li, Gen,Wang, Wenjing,et al. Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,160:9. |
APA | Chi, Weiqian,Li, Gen,Wang, Wenjing,&Sun, Chengqi.(2022).Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy.INTERNATIONAL JOURNAL OF FATIGUE,160,9. |
MLA | Chi, Weiqian,et al."Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy".INTERNATIONAL JOURNAL OF FATIGUE 160(2022):9. |
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